Question about 1994 Chevrolet S-10 Blazer

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A wire has come undone somewhere that hooks up to the fuel pump and I can't find where it has come undone from ?

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If it is a black wire it is a ground.they are usually just attached to the frame with a small screw.

Posted on Jul 30, 2009

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We need to locate the relay for the fuel pump on a 1994 Chey truck Series 1500Can you help us. g childs

Posted on Aug 04, 2009

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Posted on Jan 02, 2017

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To Jerry Ross this is angel u said 4me to put a hot wire from my battery to my fuel pump relay.bcz my grey wire don't have power my ?is to what cable?orng,blk,grn or grey?thnx


Angel, is the wire from the relay to the pump in the tank a gray wire? If this is a GM car or truck, the pump wire is almost always gray. So if you are testing if the pump works with putting battery voltage there at the relay, you would put the jumper wire into the terminal with the gray wire. If you look at the relay, there is etched on a side of it the relay explanation of the terminals. The power side is usually designated terminals 30 and 87-one is the power feed to the relay, and the 87 numbered terminal is usually the power out to the fuel pump. The other two terminals form the coil side of the relay- see the little coiled wire designation on the relay schematic? this is the signal side or coil side of the relay, don't put battery voltage into this side- you could fry the computer. If your relay has one other terminal, designated 87A, this is a test terminal for the fuel pump. A single wire connector is in the engine bay somewhere for a tech to hook up battery voltage to test the fuel pump circuit from the relay to the pump. You are doing the same thing with your jumper wire.

Aug 04, 2015 | Cars & Trucks

1 Answer

Draining bad gas


undo fuel line from input side of fuel filter.
put drain pan under undone fuel line.
install jumper wire in place of fuel pump relay( note schematic on relay for terminals to jump) as soon as connected fuel pump will energize...also replace fuel filter to ensure no restrictions

Jul 29, 2014 | 1996 GMC Jimmy

1 Answer

I replaced the motor in a 96 isuzu homebre. All the wires are hooked up. The engine will crank but wont start unless either is sprayed into the throttle body. Seems like the injectors aren't working.


first off check that your fuel pump is sending fuel to injection system. Usually there a release valve on the fuel rail somewhere. check it for fuel pressure.

Feb 18, 2014 | 1996 Isuzu Hombre

1 Answer

Just changed fuel pump...and charged batter...but car will not turn over....click to enagage.... and no lights.....i have nothing...what should i test for first?????


Ignition fuses, ground wire, and make sure that the cables are hooked up right. Also check for bare wires if the ignition fuses are blown there is probably a short somewhere.

Jun 14, 2011 | 1993 Subaru Legacy

1 Answer

I have a 98 cadillac deville & after all this cold weather in atlanta the car wouldnt start i was told it was the fuel pump & i also change the relay. It work well for one whole day & once i...


he was hooking a hot wire to the fuel pump. hes right your loosing power somewhere in the power supply to the fuel pump. it needs to be traced down to see where the power loss is. the short or loss of power could be anywhere in the line. hope this helps

Feb 15, 2011 | 1993 Cadillac DeVille

2 Answers

Fuel Pump will not run


I think you have a bad fuel pump relay. The contacts on the relay have burned. thats why you have 13 volts when check it with a meter, but no pump. when you put a load on the circuit you have a voltage drop because the contacts in the fuel pump relay won't let enough current flow. Either that or you have a bad ground to your fuel pump. Alldata.com has all the wiring diagrams you need to diagnose this problem. good luck

Jan 10, 2009 | 1995 Lincoln Continental

1 Answer

No power to fuel pump or to pump fuse at fuse block


You can get wiring diagrams from autozone.com -- they have parts of repair manuals online. I have the smae problem but the person I got my 88 fox gl from wired up a switch going to the fuel pump that you have to leave on while driving. I"m probably giong to fix this soon. It looks like the wire powering the fuel pump relay comes from the ignition switch. So if the pump side of the relay is good, but aren't getting power, you may want to see if your ignition switch isn't providing power on one wire, going to the fuel pump relay.

Jun 24, 2008 | 1990 Volkswagen Fox

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